Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/83701
Title: Analysis of velocity lag in sediment-laden open channel flows
Authors: Cheng, Nian-Sheng
Keywords: DRNTU::Engineering::Civil engineering::Water resources
Issue Date: 2004
Source: Cheng, N. S. (2004). Analysis of velocity lag in sediment-laden open channel flows. Journal of Hydraulic Engineering, 130(7), 657–666.
Series/Report no.: Journal of hydraulic engineering
Abstract: Laboratory experiments have recently confirmed that the streamwise particle velocity is largely less than that of the fluid in sediment-laden flows. This velocity lag is investigated analytically in the present study based on the drag force exerting on a particle in the presence of other neighbors. The normalized drag force or the hindrance coefficient is found generally dependent on the particle concentration, particle Reynolds number, and specific gravity. The velocity lag is then derived by relating the hindrance coefficient to the shear stress distribution for uniform sediment-laden open channel flows. The analysis shows that the profile of the velocity lag, when normalized by the shear velocity, is associated with the shear Reynolds number, dimensionless particle diameter, and specific gravity. For the dilute condition, the velocity lag distribution varies only with the shear Reynolds number, and the lag can be ignored if the shear Reynolds number is less than unity. The theoretical predictions are comparable to limited experimental results.
URI: https://hdl.handle.net/10356/83701
http://hdl.handle.net/10220/7663
ISSN: 0733-9429 (print)
DOI: 10.1061/(ASCE)0733-9429(2004)130:7(657)
Schools: School of Civil and Environmental Engineering 
Rights: © 2004 ASCE. This is the author created version of a work that has been peer reviewed and accepted for publication by Journal of hydraulic engineering, American Society of Civil Engineers. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [DOI:http://dx.doi.org/10.1061/(ASCE)0733-9429(2004)130:7(657)].
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:CEE Journal Articles

Files in This Item:
File Description SizeFormat 
ANALYSIS OF VELOCITY LAG IN SEDIMENT-LADEN.pdf489.51 kBAdobe PDFThumbnail
View/Open

SCOPUSTM   
Citations 20

24
Updated on Jun 14, 2024

Web of ScienceTM
Citations 20

21
Updated on Oct 28, 2023

Page view(s) 10

858
Updated on Jun 20, 2024

Download(s) 10

431
Updated on Jun 20, 2024

Google ScholarTM

Check

Altmetric


Plumx

Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.